1. Barlow, D. H. & Hersen, M. (1984). Single case experimental designs: Strategies for studying behavior change (2nd ed.). New York: Pergamon Press.
2. Variables Influencing Perceptions of the Communicative Competence of an Adult Augmentative and Alternative Communication System User
3. Bedrosian, J. L., Roberts, B., Raap, D., Neynaber, M. & James, K. (1995, December). Facilitating participatory storybook read-ing in young children using AAC systems. Paper presented at the American Speech-Language-Hearing Association Conven-tion, Orlando, FL.
4. Evaluating the effectiveness of AAC programs for persons with severe handicaps